Muscles are made up of proteins.
Muscles are made up of proteins. Actin and myosin are two protein molecules present in muscles and are mainly involved in the contraction of the muscle in both humans and animals. Both actin and myosin function by controlling the voluntary muscular movements within the body, along with the regulatory proteins known as troponin, tropomyosin and meromyosin. Actin and myosin proteins build filaments, which are arranged in the myofibrils in a longitudinal manner. They are also responsible for both cellular movements and non-cellular movements. The main difference between actin and myosin is that actin is a protein that produces thin contractile filaments within muscle cells, whereas myosin is a protein that produces the dense contractile filaments within muscle cells. Also Read: Muscles Let’s learn about the differences between actin and myosin
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Myosin forms a thick and long filament.
It consists of tropomyosin and troponin.
The actin filaments have a smooth surface.
The myosin filaments have a rough surface.
Actin filaments are huge in number.
One myosin filament happens per six actin filaments.
Actin filaments have lighter striations.
Myosin filaments have dark striations.
Slide into H zone during contraction.
Actin filaments are free at one end.
Myosin filaments are free at both ends.